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发明名称
Paper feeding device for tabulating machines
摘要
申请公布号
US1861975(A)
申请公布日期
1932.06.07
申请号
US19250077643
申请日期
1925.12.24
申请人
THE TABULATING MACHINE COMPANY
发明人
PAGE RALPH E.
分类号
主分类号
代理机构
代理人
主权项
地址
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